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Acid liquor thickener synthesizing technology for controlling proportion of reaction monomer

A technology of acid thickener and reactive monomer, which is applied in the direction of coating, etc., can solve the problems of lack of economies of scale and low industrial concentration, and achieve short synthesis time, low synthesis cost, and simple synthesis process steps Effect

Inactive Publication Date: 2013-04-17
马军
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Problems solved by technology

[0019] Studies have shown that in my country's thickener enterprises, the industry concentration has always been low, and the lack of economies of scale

Method used

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Embodiment

[0045] The present invention relates to a kind of synthesis process of acid liquid thickener that controls the ratio of reaction monomers, and its specific steps are as follows:

[0046] (a) at first, carry out the purification of reaction monomer;

[0047] (b) preparation of initiator solution;

[0048] (c) according to proportioning, take the 2-methyl-2-acrylamidopropanesulfonic acid solid of certain quality and be dissolved in distilled water;

[0049] (d) Add a certain amount of acrylic acid and dimethyl diallyl ammonium chloride to the solution of step (c), and control the content of 2-methyl-2-acrylamidopropanesulfonic acid to be 24% to 26% %, and fully dissolve the three reactive monomers;

[0050] (e) After mixing evenly, adjust the pH value of the solution;

[0051] (f) then move the reaction mixed solution into a constant temperature reaction vessel, exhaust oxygen and stir;

[0052] (g) adding the initiator solution dropwise;

[0053] (h) Finally, under the pro...

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Abstract

The invention discloses an acid liquor thickener synthesizing technology for controlling the proportion of a reaction monomer. The technology comprises the following steps of: (a) purifying the reaction monomer; (b) preparing an initiator solution; (c) weighing and dissolving 2-methyl-2-acrylamide propanesulfonic acid solid; (d) adding acrylic acid and dimethyl diallyl ammonium chloride, controlling the content of 2-methyl-2-acrylamide propanesulfonic acid to be 24 to 26 percent, and fully dissolving; (e) regulating the pH value of the solution; (f) transferring the mixed solution to a container and stirring; (g) adding the initiator solution; and (h) heating the reaction system to carry out polymerization reaction, and thus obtaining a target product. By adopting the technology, the acid liquor thickener can be successfully synthesized; the synthesizing technology is simple, easy to operate and short in time; various performance parameters of the synthesized product are superior to those of the conventional acid liquor thickener; and by controlling the content of the 2-methyl-2-acrylamide propanesulfonic acid serving as the reaction monomer, the intrinsic viscosity of the target product is improved.

Description

technical field [0001] The invention relates to a synthesis process of an acid liquid thickener which controls the ratio of reaction monomers. Background technique [0002] Thickener is a kind of rheological additive, which can not only thicken the coating and prevent sagging during construction, but also endow the coating with excellent mechanical properties and storage stability. It is a very important class of additives for water-based paints with low viscosity. [0003] At present, there are many kinds of thickeners available in the market, mainly including inorganic thickeners, celluloses, polyacrylates and associative polyurethane thickeners. Cellulosic thickeners have a long history of use and there are many varieties, including methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, etc., which used to be the mainstream of thickeners. The most commonly used of these is hydroxyethyl cellulose. Polyacrylate thickeners can b...

Claims

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Application Information

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IPC IPC(8): C08F226/02C08F220/06C08F220/58C08F2/00C09D7/12
Inventor 马军
Owner 马军
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